While Clowney is the main attraction, let's not let Aaron Donald's unofficial time of 4.65 in the 40 get lost. Donald weighs 285 pounds playing the defensive tackle position. Look out, NFL quarterbacks.

UPDATE: In Clowney's second attempt, he ran a 4.48, and didnt even seem to get a particularly fast start. Just an amazing performance in the 40.

Just for perspective, via SB Nation , here's a look at Clowney vs. Johnny Manziel in the 40. Oh my.

According to ESPN Stats & Info Twitter account , Clowney's unofficial 40-yard dash time is faster than every active quarterback that has run at the Combine since 2006 except for Robert Griffin III, who ran a 4.41 40-yard dash at the 2012 NFL Combine.